package cn.yang.domain.strategy.service.rule.chain.impl;

import cn.yang.domain.strategy.repository.IStrategyRepository;
import cn.yang.domain.strategy.service.armory.IStrategyDispatch;
import cn.yang.domain.strategy.service.rule.chain.AbstractLogicChain;
import cn.yang.domain.strategy.service.rule.chain.factory.DefaultChainFactory;
import cn.yang.types.common.Constants;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.lang.management.LockInfo;
import java.util.*;

/**
 * @version v1.0
 * @ClassName: cn.yang.domain.strategy.service.rule.chain.impl
 * @Description: 权重责任链
 * @Author: YJ
 */
@Slf4j
@Component("rule_weight")
public class RuleWeightLogicChain extends AbstractLogicChain {
    @Resource
    private IStrategyRepository strategyRepository;
    @Resource
    private IStrategyDispatch strategyDispatch;


    /**
     * 权重规则过滤：
     * 1. 权重规则格式：4000“102,103,104,105 5000:102,103,104,105,106,107 6000:102，103,104,105,106，107，108,109”
     * 2. 解析数据格式：判断哪个范围符合用户的特定抽奖范围
     */
    @Override
    public DefaultChainFactory.StrategyAwardVO logic(String userId, Long strategyId) {
        log.info("抽奖责任链-权重开始 userId:{} strategyId:{} ruleModel:{}",
                userId,
                strategyId,
                ruleModel());
        String ruleValue = strategyRepository.queryStrategyRuleValue(
                strategyId,
                ruleModel()
        );
        // 1.根据用户ID查询用户抽奖消耗的积分值，本章节我们先写死为固定值，后续需要从数据库中查询。
        Map<Long, String> analyticalValueGroup = getAnalyticalValue(ruleValue);

        // 2.转化KEys值，并默认排序
        List<Long> analyticalSortedKeys = new ArrayList<>(analyticalValueGroup.keySet());
        Collections.sort(analyticalSortedKeys);
        // 获取用户总使用次数，查看是否可以抽特殊奖品
        Integer userScore = strategyRepository.queryActivityAccountTotalUseCount(userId, strategyId);

        Long nextValue = analyticalSortedKeys.stream()
                .sorted(Comparator.reverseOrder())
                .filter(analyticalSortedValue -> userScore >= analyticalSortedValue)
                .findFirst()
                .orElse(null);

        if (null != nextValue) {
            Integer awardId = strategyDispatch.getRandomAwardId(strategyId, analyticalValueGroup.get(nextValue));
            log.info("抽奖责任链-权重接管 userId:{} strategyId:{} ruleModel:{}",
                    userId,
                    strategyId,
                    ruleModel());
            return DefaultChainFactory.StrategyAwardVO.builder()
                    .awardId(awardId)
                    .logicModel(ruleModel())
                    .build();
        }
        //5.过滤其他责任链
        log.info("抽奖责任链-权重放行 userId:{} strategyId:{} ruleModel:{}",
                userId,
                strategyId,
                ruleModel());
        return next().logic(userId, strategyId);
    }

    @Override
    protected String ruleModel() {
        return DefaultChainFactory.LogicModel.RULE_WEIGHT.getCode();
    }

    private Map<Long, String> getAnalyticalValue(String ruleValue) {
        String[] ruleValueGroups = ruleValue.split(Constants.SPACE);
        Map<Long, String> ruleValueMap = new HashMap<>();
        for (String ruleValueKey : ruleValueGroups) {
            //检查输入是否为空
            if (ruleValueKey == null || ruleValueKey.isEmpty()) {
                return ruleValueMap;
            }
            //分割字符串以获取键和值
            String[] parts = ruleValueKey.split(Constants.COLON);
            if (parts.length != 2) {
                throw new IllegalArgumentException("rule_weight rule_rule invalid input format");
            }
            ruleValueMap.put(Long.parseLong(parts[0]), ruleValueKey);
        }
        return ruleValueMap;
    }
}
